55 Chevy Firewall Wire Harness Grommet.
The grommet has 4 holes, is 1-5/8" in diameter and installs on the driver side of the firewall where the wiring harness and speedometer cable comes through. Prevent premature wear-out of expensive wiring by inspecting and replacing the wire harness grommet. Fits all 55 Chevy models. Made in the USA.